Pump Down - Fujitsu ARG60LHTA Service Instruction

1-14. PUMP DOWN

Operate [PUMP DOWN] switch on the display board.
< PUMP DOWN Procedure >
(1) Confirm that power is off, and open the service panel.
(2) Turn the power on.
TEST
POWER
ERROR RUN
MODE
(L1)
(3) Press [PUMP DOWN] switch for 3 seconds or more after 3 minutes after power on.
TEST
POWER
RUN
ERROR
MODE
(L1)
LED display lights on as shown in the above figure, and the fans and the compressor start operating.
If the [PUMP DOWN] switch is pressed while the compressor is operating, the compressor will stop then
start again in about 3 minutes.
(4) LED display will change as shown as below about 3 minutes after the compressor starts.
Fully close the 3-way valve on the liquid pipe side at this stage.
TEST
POWER
RUN
ERROR
MODE
(L1)
(5) When LED display changes as shown in the below figure, close the 3-way valve on the gas pipe side tightly.
TEST
POWER
RUN
ERROR
MODE
(L1)
Step (4)
Closing direction
Hexagon wrench
Liquid pipe
(6) LED display changes after 1 minute as shown in the figure below.
TEST
POWER
RUN
ERROR
MODE
(L1)
Fans and compressor stop automatically.
(7) Turn the power off.
TEST
POWER
RUN
ERROR
MODE
(L1)
PUMP DOWN is completed.
AMP Air Conditioning
: Light OFF : Light ON
PUMP
LOW NOISE PEAK CUT
DOWN
(L2) (L3) (L4) (L5) (L6) (L7)
PUMP
LOW NOISE PEAK CUT
DOWN
(L2) (L3) (L4) (L5) (L6) (L7)
PUMP
LOW NOISE PEAK CUT
DOWN
(L2) (L3) (L4) (L5) (L6) (L7)
PUMP
LOW NOISE PEAK CUT
DOWN
(L2) (L3) (L4) (L5) (L6) (L7)
Step (5)
Closing direction
Gas pipe
PUMP
LOW NOISE PEAK CUT
DOWN
(L2) (L3) (L4) (L5) (L6) (L7)
PUMP
LOW NOISE PEAK CUT
DOWN
(L2) (L3) (L4) (L5) (L6) (L7 )
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01-13